What is a healthy circle on the finger?

According to the principle of hand diagnosis in traditional Chinese medicine, the white crescent at the root of fingernail is called half moon mark, which is what you call a healthy circle! It is a measure of whether the human body is full of energy. The greater the energy, the whiter and larger the half-moon mark. Generally, the half-moon mark on the thumb of young people is 1/5 of the nail, with a clear edge. As long as there are eight and a half moon marks on ten fingers, it means that the human body is full of energy. For example, if the half moon mark is reduced, protein and black food, such as black rice and black fungus, can be supplemented. Keep as much as possible.